11311523 has 2 divisors, whose sum is σ = 11311524. Its totient is φ = 11311522.

The previous prime is 11311519. The next prime is 11311541. The reversal of 11311523 is 32511311.

11311523 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11311523 - 2² = 11311519 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655761 + 5655762.

It is an arithmetic number, because the mean of its divisors is an integer number (5655762).

Almost surely, 2^11311523 is an apocalyptic number.

11311523 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311523 is an equidigital number, since it uses as much as digits as its factorization.

11311523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90, while the sum is 17.

The square root of 11311523 is about 3363.2607689562. The cubic root of 11311523 is about 224.4779534669.

Adding to 11311523 its reverse (32511311), we get a palindrome (43822834).

The spelling of 11311523 in words is "eleven million, three hundred eleven thousand, five hundred twenty-three".